Enter your fixed costs, price per unit, and variable cost per unit to find how many units you need to sell to break even, plus break-even revenue and contribution margin.
Results
Calculated
Break-Even Point (units)
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Units to sell to cover all costs
Break-Even Revenue
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Sales dollars at the break-even point
Contribution Margin
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Profit per unit after variable cost
Units for Target Profit
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Units needed to also earn your target profit
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How to use this calculator
Enter your fixed costs per period, the price per unit you charge, and the variable cost per unit it takes to produce or deliver each sale. Optionally set a target profit if you want to know how many units it takes to earn a specific profit, not just break even. Click Calculate to see your break-even point instantly, or Clear to reset all fields to the example values.
The break-even formula
Break-even analysis compares what each unit sells for against what it costs to make, then measures that against your fixed costs. The key figure is contribution margin per unit: price per unit minus variable cost per unit — the amount each sale contributes toward covering fixed costs before any profit begins. The formulas used here are:
Break-even units = Fixed Costs ÷ (Price per Unit − Variable Cost per Unit)
Break-even revenue = Break-even units × Price per Unit
Contribution margin ratio = (Price per Unit − Variable Cost per Unit) ÷ Price per Unit
Units for target profit = (Fixed Costs + Target Profit) ÷ (Price per Unit − Variable Cost per Unit)
Interpreting the results
The break-even point in units is the sales volume where total revenue exactly equals total costs — below it you lose money, above it you profit. Break-even revenue expresses that same point in dollars. Contribution margin shows how much of each sale is left after covering the variable cost of that unit, both as a dollar amount and as a percentage of price. If you set a target profit above zero, the fourth result shows how many units you need to sell to clear fixed costs and still hit that profit goal.
Frequently Asked Questions
What is the break-even point formula?
Break-even point in units equals fixed costs divided by contribution margin per unit, where contribution margin per unit is the selling price per unit minus the variable cost per unit. Break-even revenue equals break-even units multiplied by the price per unit.
What is contribution margin?
Contribution margin per unit is the selling price minus the variable cost of producing one unit — the amount each sale contributes toward covering fixed costs before it starts generating profit. The contribution margin ratio expresses that same amount as a percentage of price.
What counts as a fixed cost versus a variable cost?
Fixed costs stay the same regardless of how many units you sell, such as rent, salaries, and insurance. Variable costs change with each unit produced or sold, such as materials, packaging, and per-unit shipping or commission. Getting this split right is essential for an accurate break-even result.
How do I find units needed for a target profit?
Add your desired profit to fixed costs before dividing by the contribution margin: units for target profit equals (fixed costs plus target profit) divided by (price per unit minus variable cost per unit). Setting target profit to zero returns the plain break-even point.
Practical Guide for Break-Even Calculator (Breakeven) - Other Calculator
Break-Even Calculator (Breakeven) - Other Calculator is most useful when the inputs reflect the situation you are actually planning around, not a best-case estimate. Treat the result as a decision aid: it gives you a structured way to compare assumptions, spot outliers, and decide what to verify next. For Other work, the most important review lens is baseline behavior, time cost, throughput, constraints, friction, and the decision threshold you care about.
Start with a baseline run using values you can defend. Then change one assumption at a time and watch which output moves the most. If one input dominates the result, spend your verification time there first. If several inputs have similar influence, use a conservative scenario and an optimistic scenario to create a practical range instead of relying on a single exact number.
Before acting on the result, compare the result with recent real-world data instead of ideal targets or one-off examples. This is especially important when the calculator supports a purchase, project plan, performance target, or operational decision. The calculator can make the math consistent, but the quality of the conclusion still depends on current data, clear units, and assumptions that match your real constraints.
When the output looks surprising, slow down and inspect each input in order. A small change in one high-leverage field can move the final number more than several low-leverage fields combined. For Break-Even Calculator (Breakeven) - Other Calculator, that means you should first confirm the value with the greatest scale, then confirm the value with the greatest uncertainty, then rerun the calculator with conservative and optimistic assumptions. This sequence turns the calculator from a single answer into a practical decision range.
Review Checklist
Confirm every input uses the unit and time period requested by the calculator.
Run a low, expected, and high scenario so the answer has a useful range.
Check whether rounding or a missing decimal place changes the decision.
Update the calculation after each meaningful workflow, schedule, cost, or usage change.